Answer to Question #176069 in Civil and Environmental Engineering for Bert

Question

A fast food chain has three different orders to be served to three different customers. However, a service crew neglect the correct numbering of orders then mixed them up and just sends them randomly to customers.
If a match refers to the fact that a customer gets the correct order, find theprobability of (a) no matches (b) exactly one match.

Answer 1

No matches = 2:3

One match = 1:3